Color

#010bcb

#010bcb
hex#010bcb
rgbrgb(1, 11, 203)
hslhsl(237, 99%, 40%)
oklchoklch(0.386 0.26 264.2)
Closest name: mediumblue (#0000cd)Relative luminance 0.0456

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#cbc101

#0170cb · #5c01cb

#cb010b · #0bcb01

Split-complementary

Open in tool →

#cb5c01 · #70cb01

#cb0170 · #cbc101 · #01cb5c

Contrast

#010bcb as textRatioAAAA largeAAAFix
Aaon white
10.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #5860fe as the text (4.52:1)
  • AAA: use #858bfe as the text (7.12:1)
  • AA: or shift the background to #a6a6a6 (4.51:1)
  • AAA: or shift the background to #cfcfcf (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #010bcb as the background.

Brands using this color

Fonts for this mood

#010bcb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #010bcb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #010bcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/010bcb-9f9cc4-df924e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md